Day 2                                                   Mckenzie N. Mackenzie H.
Daily objective-students will solve a system of equation by using substitution.
http://www.youtube.com/watch?v=JYqBzPK5qfU
Quiz-
1. 3y-2x=11
2y+2x=9

2.4y+8x=4
3y+3x=6

3.3y+5x=9
Y+5x=3

Answer key
1.3y-2x=11                                   y=9-2(2)
Y+2x=9                                          y=9-4
-2x. -2x                                                     y=5
3y-2x=11
Y=9-2x
3(9-2x)-2x=11
27-6x-2x=11
27-8x=11
-11 +8x -11 +8x
16=8x
x=2

2.4y=8x=4                                         y=2-(-1)
3y+3x=6                                             y=3
-3x -3x
3y=6-3x
y=2-x
4(2-x)+8x=4
8-4x+8x=4
8+4x=4
-8 -8
4x=-4
x=-1


3.3y+5x=29                                        y=3-5(-2)
y+5x=3                                                y=3+10
-5x -5x                                                                y=13
y=3-5x
3(3-5x)+5x=29
9-15x+5x=29
9-10x=29
-9 -9
-10x=20
10x=-20
x=-2